Efficient and Highly Enantioselective Aerobic Oxidation–Michael–Carbocyclization Cascade Transformations by Integrated Pd(0)-CPG Nanoparticle/Chiral Amine Relay Catalysis
作者:Armando Córdova、Luca Deiana、Lorenza Ghisu、Oscar Córdova、Samson Afewerki、Renyun Zhang
DOI:10.1055/s-0033-1340883
日期:——
highly diastereo- and enantioselective aerobic oxidation–Michael–carbocyclization cascade transformations by integrated heterogeneous Pd(0)-CPG nanoparticle/chiral amine relay catalysis are disclosed. The heterogeneous Pd(0)-CPG nanoparticle catalysts were efficient for both the sequential aerobic oxidation and dynamic kinetic asymmetric Michael–carbocyclization transformations, resulting in 1) oxidation
摘要 通过集成的非均相Pd(0)-CPG纳米粒子/手性胺中继催化反应,公开了一系列高度非对映和对映选择性的好氧氧化-Michael-碳环化级联转化。非均相的Pd(0)-CPG纳米颗粒催化剂可有效地进行有序氧化和动态动力学不对称Michael-碳环化反应,从而导致1)各种烯丙基醇氧化为烯醛,以及2)形成含有全-碳四元立体中心,产率高达20:1 dr和99.5:0.5 er。 通过集成的非均相Pd(0)-CPG纳米粒子/手性胺中继催化反应,公开了一系列高度非对映和对映选择性的好氧氧化-Michael-碳环化级联转化。非均相的Pd(0)-CPG纳米颗粒催化剂可有效地进行有序氧化和动态动力学不对称Michael-碳环化反应,从而导致1)各种烯丙基醇氧化为烯醛,以及2)形成含有全-碳四元立体中心,产率高达20:1 dr和99.5:0.5 er。